with open('./b.txt', encoding='utf-8') as fl:
    # fileOneLine = f.readline()
    # print(len(fileOneLine), fileOneLine, end='')  # 1
    for i in fl:
        # print('内容：', i, end='')
        # print('长度：', len(i))
        print(f'内容：{i},长度：{len(i)} ')
        print('--'*10)
